Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers
Grafting carbon nanotubes (CNTs) is one of the most commonly used methods for modifying carbon fiber surface, during which complex device is usually needed and the growth of CNTs is difficult to control. Herein, we provide an implementable and continuous chemical vapor deposition (CVD) process, by w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/5/4/111 |
| _version_ | 1797537339955740672 |
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| author | Chengjuan Wang Yanxiang Wang Shunsheng Su |
| author_facet | Chengjuan Wang Yanxiang Wang Shunsheng Su |
| author_sort | Chengjuan Wang |
| collection | DOAJ |
| description | Grafting carbon nanotubes (CNTs) is one of the most commonly used methods for modifying carbon fiber surface, during which complex device is usually needed and the growth of CNTs is difficult to control. Herein, we provide an implementable and continuous chemical vapor deposition (CVD) process, by which the novel multiscale reinforcement of carbon nanotube (CNT)-grafted carbon fiber is prepared. After exploring the effects of the moving speed and growth atmosphere on the morphology and mechanical properties of carbon nanotubes/carbon fiber (CNTs/CF) reinforcement, the optimal CVD process conditions are determined. The results show that low moving speeds of carbon fibers passing through the reactor can prolong the growth time of CNTs, increasing the thickness and density of the CNTs layer. When the moving speed is 3 cm/min or 4 cm/min, the surface graphitization degree and tensile strength of CNTs/CF almost simultaneously reach the highest value. It is also found that H<sub>2</sub> in the growth atmosphere can inhibit the cracking of C<sub>2</sub>H<sub>2</sub> and has a certain effect on prolonging the life of the catalyst. Meanwhile, the graphitization degree is promoted gradually with the increase in H<sub>2</sub> flow rate from 0 to 0.9 L/min, which is beneficial to CNTs/CF tensile properties. |
| first_indexed | 2024-03-10T12:13:44Z |
| format | Article |
| id | doaj.art-b6b6b0659db7459e8e3b3546806c4359 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-10T12:13:44Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-b6b6b0659db7459e8e3b3546806c43592023-11-21T16:00:34ZengMDPI AGJournal of Composites Science2504-477X2021-04-015411110.3390/jcs5040111Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon FibersChengjuan Wang0Yanxiang Wang1Shunsheng Su2Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), State Key Laboratory of Crystal Materials, Shandong University, Jinan 250061, ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), State Key Laboratory of Crystal Materials, Shandong University, Jinan 250061, ChinaCarbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan 250061, ChinaGrafting carbon nanotubes (CNTs) is one of the most commonly used methods for modifying carbon fiber surface, during which complex device is usually needed and the growth of CNTs is difficult to control. Herein, we provide an implementable and continuous chemical vapor deposition (CVD) process, by which the novel multiscale reinforcement of carbon nanotube (CNT)-grafted carbon fiber is prepared. After exploring the effects of the moving speed and growth atmosphere on the morphology and mechanical properties of carbon nanotubes/carbon fiber (CNTs/CF) reinforcement, the optimal CVD process conditions are determined. The results show that low moving speeds of carbon fibers passing through the reactor can prolong the growth time of CNTs, increasing the thickness and density of the CNTs layer. When the moving speed is 3 cm/min or 4 cm/min, the surface graphitization degree and tensile strength of CNTs/CF almost simultaneously reach the highest value. It is also found that H<sub>2</sub> in the growth atmosphere can inhibit the cracking of C<sub>2</sub>H<sub>2</sub> and has a certain effect on prolonging the life of the catalyst. Meanwhile, the graphitization degree is promoted gradually with the increase in H<sub>2</sub> flow rate from 0 to 0.9 L/min, which is beneficial to CNTs/CF tensile properties.https://www.mdpi.com/2504-477X/5/4/111CNTs/CFCVDgraphitization degreegrowth atmosphere |
| spellingShingle | Chengjuan Wang Yanxiang Wang Shunsheng Su Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers Journal of Composites Science CNTs/CF CVD graphitization degree growth atmosphere |
| title | Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers |
| title_full | Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers |
| title_fullStr | Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers |
| title_full_unstemmed | Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers |
| title_short | Optimization of Process Conditions for Continuous Growth of CNTs on the Surface of Carbon Fibers |
| title_sort | optimization of process conditions for continuous growth of cnts on the surface of carbon fibers |
| topic | CNTs/CF CVD graphitization degree growth atmosphere |
| url | https://www.mdpi.com/2504-477X/5/4/111 |
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